UV Index in Livermore, United States

Last updated: June 2, 2025

Understanding the UV Index in Livermore, United States is essential for protecting your skin and maintaining overall health amidst the region's sun exposure. With its Csb climate, Livermore experiences a significant range of UV levels throughout the day, peaking at an intense 11 around noon. Awareness of these UV levels is crucial to minimize risks such as sunburn and long-term skin damage. By keeping track of the UV Index, residents can make informed decisions about sun safety, ensuring that they enjoy the beautiful California sun without compromising their skin health.

Hourly UV Index in Livermore

The UV Index today paints a vivid picture of solar intensity, peaking dramatically between 12:00 PM and 2:00 PM with a striking 11—a warning to seek shade and protect skin. Starting the day at a gentle 1 at 7:00 AM, the index gradually climbs, reaching 4 by 9:00 AM and escalating to 9 by 11:00 AM. As the sun reaches its zenith, the index hits 11, indicating extreme conditions that persist for a solid three hours. Following this midday blast, it gracefully declines to 6 by 4:00 PM, before tapering off to a safer 1 by the evening. Remember to stay sun-smart during those peak hours!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	2	low	45 min
09:00	4	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	11	extreme	10 min
15:00	9	very high	15 min
16:00	6	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Livermore

Throughout the year, the UV Index exhibits significant seasonal changes that highlight periods of high risk for sun exposure. The UV Index starts at a moderate level of 3 in January and February, but sharply rises to extremes of 11 during the summer months of May through July. March and April also see dangerous levels, with indexes reaching 8 and 9 respectively. The risk tapers off again in the fall, with October at a high level of 7, followed by moderate levels in November and December. Visitors and residents should exercise caution, particularly during the high-risk months of March through August, when burn times can be as low as 10 to 15 minutes. It is advised to seek shade, wear protective clothing, and apply sunscreen regularly during these times to minimize the risk of harmful UV exposure.

Monthly Maximum UV Index for Livermore, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Livermore. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Livermore, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare Livermore UV Index with Other United States Cities

The table above highlights how UV exposure in Livermore compares to other major locations across United States. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Livermore's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Chicago UVI	3	4	6	8	9	10	10	9	8	6	4	2
Brooklyn UVI	3	5	6	8	10	10	9	9	8	6	4	2
New York City UVI	3	5	6	8	10	10	9	9	8	6	4	2
Livermore	3	5	8	9	11	11	11	10	9	7	5	3
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5